[Federal Register Volume 89, Number 171 (Wednesday, September 4, 2024)]
[Rules and Regulations]
[Pages 71838-71848]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-18933]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 98
[EPA-HQ-OAR-2023-0234; FRL-10246-03-OAR]
RIN 2060-AV49
Greenhouse Gas Reporting Rule: Revisions and Confidentiality
Determinations for Petroleum and Natural Gas Systems; Correction
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule; correction and correcting amendments.
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SUMMARY: The Environmental Protection Agency (EPA) is correcting a
final rule published in the Federal Register on May 14, 2024. The final
rule amended requirements that apply to the petroleum and natural gas
systems source category of the Greenhouse Gas Reporting Rule to ensure
that reporting is based on empirical data, accurately reflects total
methane emissions and waste emissions from applicable facilities and
allows owners and operators of applicable facilities to submit
empirical emissions data that appropriately demonstrate the extent to
which a charge is owed under the Waste Emissions Charge. This document
corrects inadvertent errors introduced in preparing the amendatory
regulatory text for the final rule or in preparing the signed final
rule for publication. These corrections do not result in any
substantive changes to the final rule.
DATES: The Federal Register corrections, numbers 1.a through 1.ff and
2.a through 2.q, are effective January 1, 2025. The correcting
amendments in instructions 2 and 3, correcting Sec. Sec. 98.233 and
98.236, respectively, are effective October 4, 2024.
ADDRESSES: EPA has established a docket for this action under Docket ID
No. EPA-HQ-OAR-2023-0234. Publicly available docket materials are
available either electronically at www.regulations.gov or in hard copy
at Air and Radiation Docket and Information Center, EPA Docket Center,
EPA/DC, EPA WJC West Building, 1301 Constitution Ave. NW, Room 3334,
Washington, DC.
FOR FURTHER INFORMATION CONTACT: Jennifer Bohman, Climate Change
Division, Office of Atmospheric Protection (MC-6207A), Environmental
Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460;
telephone number: (202) 343-9548; email address: [email protected].
SUPPLEMENTARY INFORMATION: The EPA is correcting inadvertent errors in
the regulatory text of the final rule as described in this section.
These corrections are necessary to be consistent with the May 14, 2024
final rule (89 FR 42062) (hereafter referred to as the ``final rule''),
the redline-strikeout version of the final regulatory text in the
docket for the final rule (hereinafter referred to as ``final rule
redline-strikeout'') (Docket ID No. EPA-HQ-OAR-2023-0234-0459), and the
preamble for the August 1, 2023 proposed rulemaking (88 FR 50282)
(hereafter referred to as the ``proposed rule''). Under the
Administrative Procedure Act (APA)'s good cause exception, 5 U.S.C.
553(b)(B), it is unnecessary to take public comment on these technical,
non-substantive corrections.
The EPA is correcting 40 CFR 98.233(a)(2) to add ``as applicable''
after ``well-pad site, gathering and boosting site, or facility'' to
clarify the reporting level. The ``as applicable'' language was used in
the preamble to the final rule (89 FR 42107 and 42108, May 14, 2024),
where the EPA discussed finalizing requirements for Calculation Method
2 in 40 CFR 98.233(a)(2) to allow reporters to measure the natural gas
emissions from each pneumatic device vented directly to the atmosphere
at the well-pad site, gathering and boosting site, or facility, as
applicable. The ``as applicable'' phrase was also correctly included in
the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) to
remove the extraneous instance of ``representative'' from ``measure the
emissions under representative conditions representative of normal
operations.'' The corrected text reads ``measure the emissions under
conditions representative of normal operations.'' This phrase was
correct in 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) in the final rule
redline-strikeout. The correct phrase (without the duplicate
``representative'') also appears in the final amended regulation two
times, in the versions of 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) that
were effective on July 15, 2024 (89 FR 42224 and 42228, respectively,
May 14, 2024).
The EPA is correcting 40 CFR 98.233(a)(2)(v)(A)(2) to replace an
incorrect cross-reference to ``paragraph (a)(6) of this section'' with
the correct cross-reference to ``paragraph (a)(7) of this section.''
The EPA proposed to reference ``paragraph (a)(6)'' in the Proposed
Rule, in which 40 CFR 98.233(a)(6) was ``Type of natural gas pneumatic
devices'' (88 FR 50384, August 1, 2023). In the final amendments, the
``Type of natural gas pneumatic devices'' paragraph is 40 CFR
98.233(a)(7) (89 FR 42242, May 14, 2024). The cross-reference to
``paragraph (a)(7) of this section'' was correct in the final rule
redline-strikeout. In addition, the correct paragraph reference appears
in the version of 40 CFR 98.233(a)(2)(v)(A)(2) that became effective on
July 15, 2024 (89 FR 42224, May 14, 2024). All other references to this
section are correct.
The EPA is correcting the version of 40 CFR 98.233(a)(3)(ii)(A)
that became effective on July 15, 2024 (89 FR 42226, May 14, 2024) to
replace an incomplete cross-reference to ``Sec. 98.234(a)(1) through
(3)'' with the correct cross-reference to ``Sec. 98.234(a)(1) through
(3), (6), and (7).'' The paragraphs that are cross-referenced in the
final rule and the redline-strikeout version of the final regulatory
text effective July 15, 2024 in the docket for the final rule (Docket
ID No. EPA-HQ-OAR-2023-0234-0460) correspond to the amended version of
40 CFR 98.234 that will be effective on January 1, 2025. However, the
amendments to 40 CFR 98.234 that will be effective on January 1, 2025
consolidate current 40 CFR 98.234(a)(6) into 40 CFR 98.234(a)(1) and
consolidate current 40 CFR 98.234(a)(7) into 40 CFR 98.234(a)(2).
Therefore, the EPA is correcting the cross-referenced paragraphs in the
version of 40 CFR 98.233(a)(3)(ii)(A) that became effective on July 15,
2024 so that all of the available methods are correctly referenced.
The EPA is correcting 40 CFR 98.233(c)(1) to replace an incorrectly
formatted cross-reference to ``Sec. 98.234(b) of this subpart'' with
the correct cross-reference to ``Sec. 98.234(b).'' The cross reference
as published does not follow the cross-reference requirements specified
by the Office of the Federal Register. The cross-reference to
[[Page 71839]]
``Sec. 98.234(b)'' was correct in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(d) to replace an incorrect
cross-reference to ``paragraphs (d)(5) through (11) of this section''
with the correct cross-reference to ``paragraphs (d)(5) through (12) of
this section.'' The EPA specified in both the preamble to the Proposed
Rule (88 FR 50304, August 1, 2023) and the preamble to the final rule
(89 FR 42091, May 14, 2024) that the emission calculation methodologies
for nitrogen removal units are identical to the existing calculation
methodologies in 40 CFR 98.233(d) for acid gas removal units (AGR). 40
CFR 98.233(d)(10) (revised to 40 CFR 98.233(12)) describes how to
calculate mass emissions and is part of the existing calculation
methods for AGRs. Per 40 CFR 98.236(a), reporters are required to
report annual emissions totals, in metric tons of each GHG, for each
applicable emission source. The final step in calculating mass
emissions for AGRs and NRUs is specified in 40 CFR 98.233(d)(12)
(existing 40 CFR 98.233(d)(10)) and is currently required by subpart W
reporters with AGRs. The cross-reference to ``paragraphs (d)(5) through
(12) of this section'' was correct in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(e)(2) to restore the paragraph
label ``Calculation Method 2,'' which was inadvertently omitted from
the republished version of 40 CFR 98.233. There were edits to this
paragraph in the final rule, but the removal of the paragraph label was
not included in the signed final rule and instead this error was
introduced in preparing the signed final rule for publication. The
paragraph label was correct in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(e) to add ``or to other non-
flare combustion units'' after ``routed to a regenerator firebox/fire
tubes,'' correcting 40 CFR 98.233(e)(4) to add ``or other non-flare
combustion unit'' after ``to a flare'' and to replace the phrase
``vapor recovery system or flare'' with ``vapor recovery system, flare,
or other non-flare combustion unit,'' correcting 40 CFR
98.233(e)(4)(iii) to replace ``regenerator firebox/fire tubes'' with
``other non-flare combustion unit'' and to replace the phrase ``vapor
recovery system or flare'' with ``vapor recovery system, flare, or
other non-flare combustion unit,'' and correcting 40 CFR
98.233(e)(5)(ii)(B) and (iv) to add ``or other non-flare combustion
unit'' after ``regenerator firebox/fire tubes.'' These corrections are
consistent with the preamble to the final rule (89 FR 42124, May 14,
2024), where we discussed our intent to finalize an amendment
consistent with public comment to replace all proposed references to
regenerator firebox/fire tubes in 40 CFR 98.236(e)(3) with references
to non-flare combustion units, as commenters noted that desiccant
dehydrators are not known to have configurations with regenerator
firebox/fire tubes. The preamble to the final rule also described
conforming changes in 40 CFR 98.233(e)(5) to specify procedures for
calculating emissions from non-flare combustion units used with
desiccant dehydrators that are the same as the procedures for
calculating emissions from regenerator fireboxes/fire tubes that are
used with small glycol dehydrators. The EPA is also correcting 40 CFR
98.233(e)(4)(i) to replace the phrase ``vapor recovery system or
flare'' with ``vapor recovery system, flare, or regenerator firebox/
fire tubes'' and correcting the first sentence 40 CFR 98.233(e)(5) to
remove the phrase ``or other non-flare combustion unit.'' These
corrections are needed because these provisions apply to glycol
dehydrators rather than desiccant dehydrators, and glycol dehydrators
do have regenerator fireboxes/fire tubes. The phrase ``or other non-
flare combustion unit'' was correctly included in the final rule
redline-strikeout in 40 CFR 98.233(e)(5)(ii)(B) and (e)(5)(iv); the
final rule redline-strikeout did not include any of the other
conforming corrections.
The EPA is correcting 40 CFR 98.233(f)(1)(i)(B) to correct a
grammatical error in the phrase ``hours of each well is venting to the
atmosphere'' The revised text reads ``hours that each well is vented to
the atmosphere.'' This is a correction of a typographical grammar
error; there is no change to the meaning of the provision. This
typographical error is only partially corrected in the final rule
redline-strikeout, in which the phrase reads ``hours of each well is
vented to the atmosphere.''
The EPA is correcting the version of 40 CFR 98.233(g) that became
effective on July 15, 2024 (89 FR 42226, May 14, 2024) to remove an
unnecessary term of ``/ 2'' in equations W-10A and W-10B. The inclusion
of this term is redundant in both equations due to the addition of term
``Zp,i'' to allow use of multiphase flow meters to measure
gas flow rates during the initial flowback stage as an alternative to
assuming the flowrate is one half the flow rate at the beginning of
separation, as stated in the preamble to the final rule (89 FR 42132,
May 14, 2024). The amendments to 40 CFR 98.233(g) that will be
effective on January 1, 2025 correctly present equations W-10A and W-
10B without the inclusion of a ``/ 2'' term and with the addition of
the same term ``Zp,i'' . Therefore, the EPA is correcting
equations W-10A and W-10B to remove the ``/ 2'' that was inadvertently
retained in the version of 40 CFR 98.233(g) that became effective on
July 15, 2024 so that the equations are correct.
The EPA is correcting 40 CFR 98.233(j)(4)(i)(C) and
98.236(j)(1)(x)(F) to remove the reference to a thief hatch that is
``not properly seated.'' The correction is consistent with the EPA's
intent to remove from the proposed provisions the phrase ``not properly
seated'' in 40 CFR 98.233(j)(4)(i)(C) through (D) and 40 CFR
98.233(j)(4)(ii) and instead specify that a thief hatch is open if it
is fully or partially open such there is a visible gap between the
hatch cover and the hatch portal, as stated in the preamble to the
final rule (89 FR 42132, May 14, 2024). The phrase ``not properly
seated'' was correctly not included in 40 CFR 98.233(j)(4)(i)(C) or
98.236(j)(1)(x)(F) in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(j)(5)(i) and (j)(5)(i)(B) to
replace the requirement for a ``visual inspection'' with ``audio,
visual, and olfactory inspection.'' The correction is consistent with
the EPA's intent to require audio, visual, and olfactory (AVO)
inspections in 40 CFR 98.233(j)(5) rather than just visual inspections
to determine if a gas-liquid separator liquid dump valve is stuck in an
open or partially open position, as stated in the preamble to the final
rule (89 FR 42133, May 14, 2024). The phrase ``audio, visual, and
olfactory inspection'' was correctly included in 40 CFR 98.233(j)(5)(i)
or (j)(5)(i)(B) in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(n)(1)(ii)(A) to replace the
cross-reference to ``Sec. 60.5413b of this chapter'' with a more
specific correct cross-reference to ``Sec. 60.5413b(b) of this
chapter.'' This correction is consistent with the EPA's stated intent
in the preamble to the final rule (89 FR 42145, May 14, 2024), in which
the EPA agreed with a commenter on the Proposed Rule that pointed out
the proposed Tier 2 requirements for flares should include a cross-
reference to the applicable section in 40 CFR part 60, subpart OOOOb
(hereafter referred to as ``NSPS OOOOb'') that specifies performance
test requirements for enclosed combustion devices in NSPS OOOOb (i.e.,
a subset of the total flare population under subpart W). The preamble
to the final rule indicated that the oversight was corrected in 40 CFR
[[Page 71840]]
98.233(n)(1)(ii)(A) and 40 CFR 98.233(n)(1)(ii)(C) of the final
amendments by including cross-references to 40 CFR 60.5413b(b) and (d)
that require facilities to either conduct testing of enclosed
combustion devices themselves or have testing conducted by the enclosed
combustion device manufacturer. The cross-reference to ``Sec.
60.5413b(b) of this chapter'' was correct in the final rule redline-
strikeout.
The EPA is correcting 40 CFR 98.233(n)(1)(ii)(B) to replace an
incorrect cross-reference to ``Sec. 60.5417b(b) of this chapter'' with
the correct cross-reference to ``Sec. 60.5417b of this chapter.'' 40
CFR 60.5417b describes the continuous monitoring requirements while the
more specific reference to 40 CFR 60.5417b(b) lists the control devices
that are exempt from the requirements. The correction is consistent
with the EPA's intent for open flares to require that the NSPS OOOOb
requirements in 40 CFR 60.5412b(a)(3) be followed, along with the
applicable continuous compliance and continuous monitoring requirements
in 40 CFR 60.5415b(f) and 40 CFR 60.5417b, respectively, as stated in
the preamble to the final rule (89 FR 42140, May 14, 2024). The cross-
reference to ``Sec. 60.5417b of this chapter'' was correct in the
final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(o)(6)(iii) to restore equation
W-23, which was inadvertently omitted from the republished version of
40 CFR 98.233. No changes to this equation were included in the signed
final rule and instead this error was introduced in preparing the
signed final rule for publication. The final rule redline-strikeout
correctly included equation W-23.
The EPA is correcting 40 CFR 98.233(p)(4)(ii) to restore paragraphs
(A) and (B), which were inadvertently omitted from the republished
version of 40 CFR 98.233. No changes to these paragraphs were included
in the signed final rule and instead this error was introduced in
preparing the signed final rule for publication. The final rule
redline-strikeout correctly included 40 CFR 98.233(p)(4)(ii)(A) and
(B).
The EPA is correcting 40 CFR 98.233(q)(1)(v)(B) to add ``or Sec.
60.5401b'' after ``Sec. 60.5400b'' to include both cross-references.
This correction is consistent with the EPA's intent to update the cross
references in the subpart W final rule to the NSPS OOOOb to include 40
CFR 60.5401b for natural gas processing in 40 CFR 98.232(d)(7),
98.233(q)(1)(v), 98.233(q)(1)(vii)(F), and 98.236(q)(1)(iv)(D), as
stated in the preamble to the final rule (89 FR 42172, May 14, 2024).
The cross-reference to 40 CFR 60.5401b was correct in the final rule
redline-strikeout.
The EPA is correcting 40 CFR 98.233(q)(1)(vii)(D) to add ``site, as
defined in Sec. 98.238,'' after ``single well-pad'' to clarify what is
considered a complete leak detection survey. The use of the term
``well-pad site'' is consistent with the rest of the amendments in the
final rule. In addition, the EPA stated in the preamble to the final
rule (89 FR 42164, May 14, 2024) that for the Onshore Petroleum and
Natural Gas Production industry segment, final 40 CFR 98.233(q)(1)
specifies that a complete leak detection survey is a complete survey of
all equipment on a single well-pad site. The reference to a ``single
well-pad site, as defined in Sec. 98.238'' was correct in the final
rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(q)(1)(vii)(G), the parameter
``n'' of equation W-31 in 40 CFR 98.233(q)(2)(x)(A), and 40 CFR
98.233(q)(3)(viii)(B) to replace incorrect cross-references to
``paragraph (q)(1)(vii) of this section'' with the correct cross-
reference to ``paragraph (q)(1)(viii) of this section.'' 40 CFR
98.233(q)(1)(vii)(G), the parameter ``n'' of equation W-31 in 40 CFR
98.233(q)(2)(x)(A), and 40 CFR 98.233(q)(3)(viii)(B) all refer to
provisions for complete leak surveys for natural gas distribution
facilities electing to conduct surveys over multiple years. Multi-year
surveys for natural gas distribution facilities are further addressed
in 40 CFR 98.233(q)(1)(viii) and not in 40 CFR 98.233(q)(1)(vii). The
EPA is also correcting 40 CFR 98.233(q)(3)(viii)(B) to replace a cross-
reference to non-existent ``paragraph (q)(3)(vii)(A) of this section''
with the correct cross-reference to ``paragraph (q)(3)(viii)(A) of this
section.'' Natural gas distribution facilities are directed to use
equation W-31 to determine the meter/regulator run population in 40 CFR
98.233(q)(3)(viii)(A). In addition, table 3 of the preamble to the
final rule indicates that in 40 CFR 98.233(q)(3)(viii)(B), the EPA
intended to correct the internal cross reference from ``paragraph
(q)(3)(vii)(A) of this section'' to ``paragraph (q)(3)(viii)(A) of this
section'' (89 FR 42191, May 14, 2024). The cross references to
``paragraph (q)(1)(viii) of this section'' and ``paragraph
(q)(3)(viii)(A) of this section'' were correct in each of these
sections in the final rule redline-strikeout.
The EPA is correcting the cross-references in the parameter ``k''
of equation W-30 in 40 CFR 98.233(q)(2) and correcting 40 CFR
98.233(q)(3)(vii) to replace cross-references to non-existent
paragraphs ``Sec. 98.234(q)(1), (3) and (5),'' ``Sec.
98.234(q)(2)(i),'' and ``Sec. 98.234(q)(2)(ii)'' with correct cross-
references to ``Sec. 98.234(a)(1), (3) and (5),'' ``Sec.
98.234(a)(2)(i),'' and ``Sec. 98.234(a)(2)(ii),'' respectively. The
``k'' term is the undetected leak factor specific to the leak detection
method. The leak detection methods are in 40 CFR 98.234(a); 40 CFR
98.234(q) does not exist. These cross-references were incorrect in the
amendatory regulatory text of the Proposed Rule as well as the final
rule redline-strikeout; however, both the preamble to the Proposed Rule
and the preamble to the final rule clearly state that the adjustment
factor k is screening method-specific, which supports the intent to
cross-reference the screening methods. For example, the preamble to the
final rule states at 89 FR 42163, May 14, 2024 that in order to account
for the quantity of emissions that remain undetected by each screening
method, we are finalizing as proposed to provide a method specific
adjustment factor, k, for the calculation methods used to quantify
emissions from equipment leaks using the leaker method in 40 CFR
98.233(q). For all of these same reasons, the EPA is correcting similar
language in the regulatory text that was effective July 15, 2024 (for
Reporting Year 2024). Specifically, the EPA is correcting 40 CFR
98.233(q)(3)(vii) to replace cross-references to non-existent
paragraphs ``Sec. 98.234(q)(1), (3), and (5)'' ``Sec.
98.234(q)(2)(i),'' and ``Sec. 98.234(q)(2)(ii)'' with correct cross-
references to ``Sec. 98.234(a)(1), (3), (5), and (6),'' ``Sec.
98.234(a)(2),'' and ``Sec. 98.234(a)(7),'' respectively. The corrected
cross-references reference the same screening methods as the
corrections to the version of 40 CFR 98.233(q)(3)(vii) that will be
effective January 1, 2025, but the specific cross-references are
slightly different so that they correctly reference the methods in 40
CFR 98.234(a) that are currently effective rather than the version of
40 CFR 98.234(a) that will not be effective until January 1, 2025.
The EPA is correcting the parameter ``GHGi'' of equation
W-30 in 40 CFR 98.233(q)(2) to clarify that onshore natural gas
transmission pipeline facilities should use the same default GHG
concentrations as natural gas distribution facilities. The correct mole
fractions for the onshore natural gas transmission pipeline industry
segment
[[Page 71841]]
are specified in the final rule preamble at 89 FR 42091, May 14, 2024,
where the EPA indicated that the addition of ``onshore natural gas
transmission pipeline'' should be grouped with a methane concentration
of 1 and a carbon dioxide concentration value of 0.011 in the variable
``GHGi'' of equation W-32A in 40 CFR 98.233(r). While the preamble to
the final rule did not specifically identify this as including changes
to 40 CFR 98.233(q)(2), this is a conforming edit with the preamble
statement. The revision to the parameter ``GHGi'' of
equation W-30 in 40 CFR 98.233(q)(2) was correct in the final rule
redline-strikeout.
The EPA is correcting 40 CFR 98.233(q)(4)(i) to replace the
incorrect cross-reference to ``paragraphs (q)(1)(i) through (v) of this
section'' with the correct cross-references to ``paragraphs (q)(1)(i)
through (vi) of this section'' in order for this cross-reference to
include the onshore natural gas transmission pipeline facility
components specified in 40 CFR 98.233(q)(1)(vi). The cross-reference to
``paragraphs (q)(1)(i) through (vi) of this section'' was not correct
in the final rule redline-strikeout. However, this correction
appropriately includes a cross-reference for transmission pipeline
facilities to use the provisions to develop a facility-specific
emission factor in accordance with 40 CFR 98.233(q)(4). As discussed in
the preamble to the final rule (89 FR 42088, May 14, 2024), in
consideration of public comments concerning the equipment leak emission
sources at transmission pipeline companies and consistent with CAA
section 136(h), we finalized that transmission pipeline facilities can
develop a facility-specific leaker factor in accordance with 40 CFR
98.233(q)(4) using the leak measurements obtained in accordance with 40
CFR 98.233(q)(3). Our intent for the facility-specific emission factor
provisions to apply to transmission pipeline facilities is also made
clear in 40 CFR 98.233(q)(2)(xii), which provides that transmission
pipeline facilities must use the facility-specific leaker emission
factor calculated in accordance with 40 CFR 98.233(q)(4) of this
section.
The EPA is correcting the parameters ``Es,MR,i'' and
``CountMR'' of equation W-32B in 40 CFR 98.233(r)
introductory text to replace incorrect cross-references to ``paragraph
(q)(3)(vii)(B) of this section'' with the correct cross-references to
``paragraph (q)(3)(viii)(B) of this section.'' These two variables are
specific to emissions calculations for meter/regulator runs at above
grade transmission-distribution transfer stations (Natural Gas
Distribution industry segment). 40 CFR 98.233(q)(3)(viii)(B) is also
specific to natural gas distribution, while 40 CFR 98.233(q)(3)(vii) is
for the adjustment factor for undetected leaks (which is not specific
to natural gas distribution). Further, 40 CFR 98.233(q)(3)(vii)(B) does
not exist. The reference to a ``paragraph (q)(3)(viii)(B) of this
section'' was correct in both parameters in the final rule redline-
strikeout.
The EPA is correcting 40 CFR 98.233(s)(2)(i) to remove ``and
report'' after ``calculate'' and before ``emissions'' to remove the
reference to reporting emissions under 40 CFR 98.233 (``Calculating GHG
emissions.''). This specific wording change was not discussed in the
preamble to the final rule but the phrase ``and report'' was correctly
not included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.233(z)(2)(i)(B) to remove
``CO2 content of'' after ``maximum'' and before ``higher
heating value'' to delete extraneous text that was inadvertently not
removed. This correction is consistent with the EPA's intent to
finalize in 40 CFR 98.233(z)(2) that subpart C methodologies Tier 2 or
higher may be used for fuel meeting the definition of ``natural gas''
in 40 CFR 98.238 if it has a minimum HHV of 950 Btu/scf, a maximum HHV
of 1,100 Btu/scf, and a minimum CH4 content of 70 percent by
volume, as stated in preamble to the final rule (89 FR 42179, May 14,
2024). The phrase ``CO2 content of'' was correctly not
included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(b), 98.236(b)(5)(i)(A),
98.236(c)(4)(vi), (vii), and (viii), and 98.236(e)(3)(vi) to replace
instances of ``well-pad'' with the term ``well-pad site'' defined in 40
CFR 98.238 for clarity in the reporting requirements. As the EPA stated
in the preamble to the final rule (89 FR 42108, May 14, 2024), while
the phrase ``well-pads'' generally refers to sites in the Onshore
Petroleum and Natural Gas Production segment that would be considered a
complete survey, we know there are cases when some pneumatic devices
might not be on a well-pad but are still ``associated with a single
well-pad'' (as defined in 40 CFR 98.238). In the preamble to the final
rule, we noted that we finalized the use of the term ``well-pad site''
to ensure that the requirements to measure or monitor all pneumatic
devices (or equipment leaks) at the site-level for facilities in the
Onshore Petroleum and Natural Gas Production segment include such
devices. We also clarified in the preamble to the final rule that the
reporting requirements for sources that are not reported at the
equipment level must be reported at the well-pad site level. The term
``well-pad site'' was correctly included in each of these paragraphs in
the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(b)(5)(ii)(C) to replace the
reference to the non-existent parameter ``Tm.z'' in equation
W-1C to Sec. 98.233 with the correct reference to
``Tmal,z'' in equation W-1C to Sec. 98.233. While the
equation parameter referenced in 40 CFR 98.236(b)(5)(ii)(C) was not
correct in the final rule redline-strikeout, the term
``Tmal,z'' is the correct parameter defined in equation W-
1C. The term ``Tm.z'' does not exist. The EPA is correcting
this reporting element in the regulatory text that was effective July
15, 2024 (for Reporting Year 2024) as well as the regulatory text that
is effective January 1, 2025.
The EPA is correcting 40 CFR 98.236(e)(1)(xvi)(C) to replace the
incorrect cross-reference to ``paragraph (e)(4) of this section'' with
the correct cross-reference to ``(e)(4).'' In the signed final rule,
the Proposed Rule and the final rule redline-strikeout, the second
cross-reference was to ``(e)(4)'' and was included in the phrase
``according to Sec. 98.233(e)(1) and, if applicable, (e)(4).'' The
EPA's intention was that ``Sec. 98.233'' applied to both cross-
references as it does in 40 CFR 98.236(e)(1)(xvi)(B) and
(e)(3)(viii)(A) and (B), which all use the phrase ``according toSec.
98.233(e)(1) and, if applicable, (e)(4)'' in the final rule. During
preparation for publication, the reference to ``(e)(4)'' in 40 CFR
98.236(e)(1)(xvi)(C) was erroneously revised to ``paragraph (e)(4) of
this section''; 40 CFR 98.236(e)(4) is for reporting, not calculation.
The corrected version restores the cross-reference as it appeared in
the signed final rule, the Proposed Rule, and the final rule redline-
strikeout.
The EPA is correcting 40 CFR 98.236(e)(3)(vii)(B) to replace the
phrase ``from the flash tank'' with ``routed.'' This correction is
consistent with the discussion in the preamble to the final rule (89 FR
42124, May 14, 2024), in which the EPA noted that flash tanks are not
applicable for desiccant dehydrators, the proposed reference to flash
tanks in 40 CFR 98.236(e)(3)(vii)(B) was included in error, and the
final reporting requirement in 40 CFR 98.236(e)(3)(vii)(B) does not
include the proposed reference to flash tanks. The phrase ``routed''
was correctly included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(e)(3)(viii)(A) to replace the
[[Page 71842]]
phrase ``non-flare combustion units'' with ``non-flare combustion
unit'' to correct a grammatical error. This correction fixes a
typographical error in the number agreement of this paragraph. The
final rule redline-strikeout correctly uses the phrase ``non-flare
combustion unit.''
The EPA is correcting 40 CFR 98.236(l)(3)(iii) to replace the
phrase ``tested well(s)'' with ``tested well'' for consistency with the
requirement to report information in 40 CFR 98.236(l)(3) for each well
tested. This correction fixes a typographical error in the number
agreement of this paragraph. The correction to refer to a singular well
is consistent with the requirement to report information in 40 CFR
98.236(l)(3) for each well tested in the final rule. The final rule
redline-strikeout correctly uses the phrase ``tested well'' in 40 CFR
98.236(l)(3)(iii).
The EPA is correcting 40 CFR 98.236(l)(4)(iv) to remove the
requirement that reporting of the data element may only be delayed if
the only wells that are tested in the same basin are wildcat wells and/
or delineation wells. This correction is consistent with the EPA's
intent to finalize the reporting requirements for well testing to
continue providing the option for the 2-year delay in reporting these
data elements but to no longer require that all wells in the sub-basin
be wildcat and/or delineation wells for reporters to be able to use the
2-year delay, as stated in the preamble to the final rule (89 FR 42106,
May 14, 2024). This provision is correct in the final rule redline-
strikeout.
The EPA is correcting 40 CFR 98.236(m)(7)(iii) to replace the
phrase ``continuous gas composition analyzers'' with ``a continuous gas
composition analyzer'' to correct a grammatical error. The preamble to
the final rule (89 FR 42137, May 14, 2024) uses the singular
``analyzer'' when noting that the final reporting requirements in 40
CFR 98.236(m)(7) include, as proposed, a requirement to indicate
whether a continuous flow monitor was used to measure flow rates and a
continuous composition analyzer was used to measure CH4 and
CO2 concentrations. The phase ``a continuous gas composition
analyzer'' is correctly included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(n)(14) to replace the incorrect
cross-reference to ``Sec. 98.233(n)(3)(i) or (ii)'' with the correct
cross-reference to ``Sec. 98.233(n)(4)(i) or (ii).'' Final 40 CFR
98.236(n)(14) requires reporting of the annual average mole fraction of
CH4 in the feed gas to the flare. Final 40 CFR 98.233(n)(3)
specifies methods for calculating flow rate while 40 CFR 98.233(n)(4)
specifies methods for calculating composition. In the proposed
regulatory text, 40 CFR 98.233(n)(3) specified methods for calculating
composition, so the reference to 40 CFR 98.233(n)(3) in proposed
98.236(n)(14) was correct, but that reference was not updated when the
paragraphs in 40 CFR 98.233(n) were re-arranged between proposal and
promulgation. The cross-reference to ``Sec. 98.233(n)(4)(i) or (ii)''
is correctly included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(q)(2)(iv) to replace the
incorrect reference to a ``site-specific emission factor'' with the
correct reference to a ``facility-specific emission factor.'' In the
preamble to the final rule (89 FR 42166, May 14, 2024), we stated that
we were finalizing a change from proposal to the terminology of the
emission factor from ``site-specific'' to ``facility-specific'' to
better characterize the application of the developed emission factor,
which is to be at the facility-level based on site-level measurement
data for certain industry segments. This change is also consistent with
changes from the proposed rule text to the final rule text made to
other instances of ``site-specific'' to ``facility-specific'' in 40 CFR
98.233(q)(4). The reference to a ``facility-specific emission factor''
is correctly included in the final rule redline-strikeout.
The EPA is correcting 40 CFR 98.236(z)(2) to replace the less
specific reference to ``natural gas meeting the criteria in Sec.
98.233(z)'' with the specific reference to ``natural gas meeting the
criteria in Sec. 98.233(z)(1) or (2) or a fuel meeting the criteria in
Sec. 98.233(z)(3)'' to better clarify which reporting requirements are
applicable. This correction is consistent with the preamble to the
final rule (89 FR 42180, May 14, 2024), in which the EPA stated that
the final amendments included a new reporting requirement in 40 CFR
98.236(z)(2) specifically for RICE and GT that combust natural gas that
meets the criteria of 40 CFR 98.233(z)(1) or (2) or a fuel meeting the
specifications of 40 CFR 98.233(z)(3). The reference to a ``natural gas
meeting the criteria in Sec. 98.233(z)(1) or (2) or a fuel meeting the
criteria in Sec. 98.233(z)(3)'' is correctly included in the final
rule redline-strikeout.
Finally, the EPA is correcting 40 CFR 98.236(aa)(3) to add ``under
the same e-GGRT identification number in the calendar year'' after
``subpart NN of this part'' to clarify the requirements reporters must
meet to no longer be required to report the quantities of natural gas
received or NGLs received or leaving the gas processing plant. As the
EPA stated in the preamble to the final rule (89 FR 42186, May 14,
2024), the final reporting requirements in 40 CFR 98.236(aa)(3) specify
that facilities that indicate that they both fractionate NGLs and
report as a supplier under subpart NN under the same e-GGRT
identification number and for the same calendar year would no longer be
required to report the quantities of natural gas received or NGLs
received or leaving the gas processing plant. The phrase ``under the
same e-GGRT identification number in the calendar year'' is correctly
included in the final rule redline-strikeout.
Section 553(b)(B) of the APA, 5 U.S.C. 553(b)(B), provides that
when an agency for good cause finds that public notice and comment
procedures are impracticable, unnecessary, or contrary to the public
interest, the agency may issue a rule without providing notice and an
opportunity for public comment. The EPA has determined that there is
good cause for making these technical corrections final without prior
proposal. Such notice and opportunity for comment is unnecessary as the
technical corrections are for minor typographical and other
nonsubstantive errors made in preparing the amendatory regulatory text
for the final rule or in preparing the signed final rule for
publication, as explained in this preamble.
List of Subjects in 40 CFR Part 98
Environmental protection, Administrative practice and procedure,
Air pollution control, Greenhouse gases, Reporting and recordkeeping
requirements.
Corrections
Corrections to the Amendments Effective January 1, 2025
In FR Doc. 2024-08988 beginning on page 42062 in the Federal
Register of Tuesday, May 14, 2024, the following corrections are made:
1. Effective January 1, 2025, in Sec. 98.233:
a. On page 42238, in the third column, paragraph (a)(2)
introductory text is corrected to read:
``(2) Calculation Method 2. Except as provided in paragraph (a)(1)
of this section, you may elect to measure the volumetric flow rate of
each natural gas pneumatic device vent that vents directly to the
atmosphere at your well-pad site, gathering and boosting site, or
facility, as applicable, as specified in paragraphs (a)(2)(i) through
(ix) of this
[[Page 71843]]
section. You must exclude the counts of devices measured according to
paragraph (a)(1) of this section from the counts of devices to be
measured or for which emissions are calculated according to the
requirements in this paragraph (a)(2).''
b. On page 42239, in the first column, paragraph (a)(2)(iii)
introductory text is corrected to read:
``(iii) For all industry segments, determine the volumetric flow
rate of each natural gas pneumatic device vent (in standard cubic feet
per hour) using one of the methods specified in Sec. 98.234(b) through
(d), as appropriate, according to the requirements specified in
paragraphs (a)(2)(iii)(A) through (E) of this section. You must measure
the emissions under conditions representative of normal operations,
which excludes periods immediately after conducting maintenance on the
device or manually actuating the device.''
c. On page 42239, in the second column, paragraph (a)(2)(v)(A)(2)
is corrected to read:
``(2) Confirm that the device is correctly characterized as a
continuous high bleed pneumatic device according to the provisions in
paragraph (a)(7) of this section. If the device type was
mischaracterized, recharacterize the device type and use the
appropriate methods in paragraph (a)(2)(v)(B) or (C) of this section,
as applicable.''
d. On page 42243, in the first column, (c)(1) introductory text is
corrected to read:
``(1) Calculation method 1. If you have or elect to install a
continuous flow meter that is capable of meeting the requirements of
Sec. 98.234(b) on a supply line to natural gas driven pneumatic pumps,
then for the period of the year when the natural gas supply line is
dedicated to any one or more natural gas driven pneumatic pumps, and
each of the pumps is vented directly to the atmosphere, you must use
the applicable methods specified in paragraph (c)(1)(i) or (ii) of this
section to calculate vented CH4 and CO2 emissions
from those pumps.''
e. On page 42243, in the third column, paragraph (c)(2)(ii)
introductory text is corrected to read:
``(ii) Determine the volumetric flow rate of each natural gas
driven pneumatic pump (in standard cubic feet per hour) using one of
the methods specified in Sec. 98.234(b) through (d), as appropriate,
according to the requirements specified in paragraphs (c)(2)(ii)(A)
through (D) of this section. You must measure the emissions under
conditions representative of normal operations, which excludes periods
immediately after conducting maintenance on the pump.''
f. On page 42245, beginning in the first column, paragraph (d)
introductory text is corrected to read:
``(d) Acid gas removal unit (AGR) vents and Nitrogen removal unit
(NRU) vents. For AGR vents (including processes such as amine,
membrane, molecular sieve or other absorbents and adsorbents),
calculate emissions for CH4 and CO2 vented
directly to the atmosphere or emitted through a sulfur recovery plant,
using any of the calculation methods described in paragraphs (d)(1)
through (4) of this section, and also comply with paragraphs (d)(5)
through (12) of this section, as applicable. For NRU vents, calculate
emissions for CH4 vented directly to the atmosphere using
any of the calculation methods described in paragraphs (d)(1) through
(4) of this section, and also comply with paragraphs (d)(5) through
(12) of this section, as applicable. If any AGR vents or NRU vents are
routed to a flare, you must calculate CH4, CO2,
and N2O emissions for the flare stack as specified in
paragraph (n) of this section and report emissions from the flare as
specified in Sec. 98.236(n). If any AGR vents or NRU vents are routed
through an engine (e.g., permeate from a membrane or de-adsorbed gas
from a pressure swing adsorber used as fuel supplement) (i.e., routed
to combustion), you must calculate CH4, CO2, and
N2O emissions as specified in subpart C of this part or as
specified in paragraph (z) of this section, as applicable.''
g. On page 42247, beginning in the first column, paragraph (e)
introductory text is corrected to read:
``(e) Dehydrator vents. For dehydrator vents, calculate annual
CH4 and CO2 emissions using the applicable
calculation methods described in paragraphs (e)(1) through (5) of this
section. For glycol dehydrators that have an annual average daily
natural gas throughput that is greater than or equal to 0.4 million
standard cubic feet per day, use Calculation Method 1 in paragraph
(e)(1) of this section. For glycol dehydrators that have an annual
average of daily natural gas throughput that is greater than 0 million
standard cubic feet per day and less than 0.4 million standard cubic
feet per day, use either Calculation Method 1 in paragraph (e)(1) of
this section or Calculation Method 2 in paragraph (e)(2) of this
section. If you are required to use a software program consistent with
the requirements of paragraph (e)(1) of this section for compliance
with Federal or state regulations, air permit requirements, or annual
emissions inventory reporting for the current reporting year, you must
use Calculation Method 1 to calculate annual CH4 and
CO2 emissions. If emissions from dehydrator vents are routed
to a vapor recovery system, you must calculate the emissions according
to paragraph (e)(4) of this section. If emissions from dehydrator vents
are routed to a regenerator firebox/fire tubes or to other non-flare
combustion units, you must calculate CH4, CO2,
and N2O annual emissions as specified in paragraph (e)(5) of
this section. If any dehydrator vents are routed to a flare, you must
calculate CH4, CO2, and N2O emissions
for the flare stack as specified in paragraph (n) of this section and
report emissions from the flare as specified in Sec. 98.236(n).''
h. On page 42247, beginning in the third column, paragraph (e)(2)
is corrected to read:
``(2) Calculation Method 2. Calculate annual volumetric emissions
from glycol dehydrators using equation W-5 to this section, and then
calculate the collective CH4 and CO2 mass
emissions from the volumetric emissions using the procedures in
paragraph (v) of this section:
[GRAPHIC] [TIFF OMITTED] TR04SE24.070
Where:
Es,i = Annual total volumetric GHG emissions (either
CO2 or CH4) at standard conditions in cubic
feet.
EFi = Population emission factors for glycol dehydrators
in thousand standard cubic feet per dehydrator per year. Use 73.4
for CH4 and 3.21 for CO2 at 60 [deg]F and 14.7
psia.
Count = Total number of glycol dehydrators that have an annual
average daily natural gas throughput that is greater than 0 million
standard cubic feet per day and less than 0.4 million standard cubic
feet per day for which you elect to use this Calculation Method 2.
[[Page 71844]]
1000 = Conversion of EFi in thousand standard cubic feet
to standard cubic feet.''
i. On page 42248, in the first column, paragraphs (e)(4)
introductory text and (e)(4)(i) are corrected to read:
``(4) Emissions vented directly to atmosphere from dehydrators
routed to a vapor recovery system, flare, or regenerator firebox/fire
tubes. If the dehydrator(s) has a vapor recovery system, routes
emissions to a flare, or routes emissions to a regenerator firebox/fire
tubes and you use Calculation Method 1 or Calculation Method 2 in
paragraph (e)(1) or (2) of this section, calculate annual emissions
vented directly to atmosphere from the dehydrator(s) during periods of
time when emissions were not routed to the vapor recovery system,
flare, or regenerator firebox/fire tubes as specified in paragraphs
(e)(4)(i) and (ii) of this section. If the dehydrator(s) has a vapor
recovery system or routes emissions to a flare or other non-flare
combustion unit and you use Calculation Method 3 in paragraph (e)(3) of
this section, calculate annual emissions vented directly to atmosphere
from the dehydrator(s) during periods of time when emissions were not
routed to the vapor recovery system, flare, or other non-flare
combustion unit as specified in paragraph (e)(4)(iii) of this section.
``(i) When emissions from dehydrator(s) are calculated using
Calculation Method 1 or 2, calculate vented emissions as specified in
paragraph (e)(1) or (2) of this section, which represents the emissions
from the dehydrator prior to the vapor recovery system, flare, or
regenerator firebox/fire tubes. Calculate an average hourly vented
emissions rate by dividing the vented emissions by the number of hours
that the dehydrator was in operation.''
j. On page 42248, beginning in the second column, paragraph
(e)(4)(iii) is corrected to read:
``(iii) When emissions from dehydrator(s) are calculated using
Calculation Method 3, calculate total annual emissions vented directly
to atmosphere from the dehydrator(s) during periods of time when
emissions were not routed to the vapor recovery system, flare, or other
non-flare combustion unit by determining of the number of
depressurization events (including portions of an event) that vented to
atmosphere based on engineering estimate and best available data. You
must take into account periods with reduced capture efficiency of the
vapor recovery system, flare, or other non-flare combustion unit. If
emissions are routed to a flare but the flare is unlit, calculate
emissions in accordance with the methodology specified in paragraph (n)
of this section and report emissions from the flare as specified in
Sec. 98.236(n).''
k. On page 42248, in the third column, paragraph (e)(5)
introductory text is corrected to read:
``(5) Combustion emissions from routing to regenerator firebox/fire
tubes or other non-flare combustion unit. If any glycol dehydrator
emissions are routed to a regenerator firebox/fire tubes, calculate
emissions from these devices attributable to dehydrator flash tank
vents or still vents as specified in paragraphs (e)(5)(i) through (iii)
of this section. If any desiccant dehydrator emissions are routed to a
non-flare combustion unit, calculate combusted emissions as specified
in paragraphs (e)(5)(i) through (iii) of this section. If you operate a
CEMS to monitor the emissions from the regenerator firebox/fire tubes
or other non-flare combustion unit, calculate emissions as specified in
paragraph (e)(5)(iv) of this section.''
l. On page 42249, in the first column, paragraph (e)(5)(ii)(B) is
corrected to read:
``(B) Measure the composition of the gas from the dehydrator(s) to
the regenerator firebox/fire tubes or other non-flare combustion unit
using a continuous composition analyzer. If you continuously measure
gas composition, then those measured data must be used to calculate
dehydrator emissions from the regenerator firebox/fire tubes or other
non-flare combustion unit.''
m. On page 42249, in the second column, paragraph (e)(5)(iv) is
corrected to read:
``(iv) If you operate and maintain a CEMS that has both a
CO2 concentration monitor and volumetric flow rate monitor
for the combustion gases from the regenerator firebox/fire tubes or
other non-flare combustion unit, you must calculate only CO2
emissions for the regenerator firebox/fire tubes or other non-flare
combustion unit. You must follow the Tier 4 Calculation Method and all
associated calculation, quality assurance, reporting, and recordkeeping
requirements for Tier 4 in subpart C of this part (General Stationary
Fuel Combustion Sources). If a CEMS is used to calculate emissions from
a regenerator firebox/fire tubes or other non-flare combustion unit,
the requirements specified in paragraphs (e)(5)(ii) and (iii) of this
section are not required.''
n. On page 42250, beginning in the first column, paragraph
(f)(1)(i)(B) is corrected to read:
``(B) Apply the average hourly flow rate calculated under paragraph
(f)(1)(i)(A) of this section to each well in the same pressure group
that have the same tubing diameter group, for the number of hours that
each well is vented to the atmosphere.''
o. On page 42258, beginning in the second column, paragraph
(j)(4)(i)(C) is corrected to read:
``(C) During periods when a thief hatch is open and emissions from
the tank are routed to a vapor recovery system or a flare, assume the
capture efficiency of the vapor recovery system or a flare is 0
percent. A thief hatch is open if it is fully or partially open such
there is a visible gap between the hatch cover and the hatch portal. To
calculate vented emissions during such periods, multiply the average
hourly vented emissions rate determined in paragraph (j)(4)(i)(A) of
this section by the number of hours that the thief hatch is open.
Determine the number of hours that the thief hatch is open as specified
in paragraph (j)(7) of this section.''
p. On page 42258, beginning in the second column, paragraph
(j)(5)(i) introductory text is corrected to read:
``(i) If a parametric monitor is operating on a controlled
atmospheric pressure storage tank or gas-liquid separator, you must use
data obtained from the parametric monitor to determine periods when the
gas-liquid separator liquid dump valve is stuck in an open or partially
open position. An applicable operating parametric monitor must be
capable of logging data whenever a gas-liquid separator liquid dump
valve is stuck in an open or partially open position, as well as when
the gas-liquid separator liquid dump valve is subsequently closed. If
an applicable parametric monitor is not operating, including during
periods of time when the parametric monitor is malfunctioning, you must
perform an audio, visual, and olfactory inspection of each gas-liquid
separator liquid dump valve to determine if the valve is stuck in an
open or partially open position, in accordance with paragraphs
(j)(5)(i)(A) and (B) of this section.''
q. On page 42259, in the first column, paragraph (j)(5)(i)(B) is
corrected to read:
``(B) If stuck gas-liquid separator liquid dump valve is
identified, the dump valve must be counted as being open since the
beginning of the calendar year, or from the previous audio, visual, and
olfactory inspection that did not identify the dump valve as being
stuck in the open position in the same calendar year. If the dump valve
is fixed following audio, visual, and olfactory inspection, the time
period for which
[[Page 71845]]
the dump valve was stuck open will end upon being repaired. If a stuck
dump valve is identified and not repaired, the time period for which
the dump valve was stuck open must be counted as having occurred
through the rest of the calendar year.''
r. On page 42261, beginning in the first column, paragraphs
(n)(1)(ii)(A) and (B) are corrected to read:
``(A) The requirements in Sec. 60.5412b(a)(1) of this chapter,
along with the applicable testing requirements in Sec. 60.5413b(b) of
this chapter, the applicable continuous compliance requirements in
Sec. 60.5415b(f) of this chapter, and the applicable continuous
monitoring requirements in Sec. 60.5417b of this chapter. You must
also keep the applicable records in Sec. 60.5420b(c)(11) of this
chapter.
``(B) The requirements in Sec. 60.5412b(a)(3) of this chapter, the
applicable continuous compliance requirements in Sec. 60.5415b(f) of
this chapter, and the applicable continuous monitoring requirements in
Sec. 60.5417b of this chapter. You must also keep the applicable
records in Sec. 60.5420b(c)(11) of this chapter.''
s. On page 42268, beginning in the first column, paragraph
(o)(6)(iii) is corrected to read:
``(iii) Using equation W-23 to this section, develop an emission
factor for each compressor mode-source combination specified in
paragraphs (o)(1)(i)(A) through (C) of this section. These emission
factors must be calculated annually and used in equation W-22 to this
section to determine volumetric emissions from a centrifugal compressor
in the mode- source combinations that were not measured in the
reporting year.
[GRAPHIC] [TIFF OMITTED] TR04SE24.071
Where:
EFs,m = Reporter emission factor to be used in equation
W-22 to this section for compressor mode-source combination m, in
standard cubic feet per hour. The reporter emission factor must be
based on all compressors measured in compressor mode-source
combination m in the current reporting year and the preceding two
reporting years.
MTs,m,p = Average volumetric gas emission measurement for
compressor mode-source combination m, for compressor p, in standard
cubic feet per hour, calculated using all volumetric gas emission
measurements (MTs,m in equation W-21 to this section) for
compressor mode-source combination m for compressor p in the current
reporting year and the preceding two reporting years.
Countm = Total number of compressors measured in
compressor mode-source combination m in the current reporting year
and the preceding two reporting years.
m = Compressor mode-source combination specified in paragraph
(o)(1)(i)(A), (B), or (C) of this section.''
t. On page 42271, in the third column, paragraph (p)(4)(ii) is
corrected to read:
``(ii) Determine the volumetric flow at standard conditions from
the common stack using one of the methods specified in paragraphs
(p)(4)(ii)(A) through (F) of this section.
(A) A temporary meter such as a vane anemometer according to
methods set forth in Sec. 98.234(b).
(B) Calibrated bagging according to methods set forth in Sec.
98.234(c).
(C) A high volume sampler according to methods set forth in Sec.
98.234(d).
(D) [Reserved]
(E) You may choose to use any of the methods set forth in Sec.
98.234(a)(1) through (3) to screen for emissions. If emissions are
detected using one of these specified methods, then you must use one of
the methods specified in paragraphs (p)(4)(ii)(A) through (D) of this
section. If emissions are not detected using the methods in Sec.
98.234(a)(1) through (3), then you may assume that the volumetric
emissions are zero. For the purposes of this paragraph, when using any
of the methods in Sec. 98.234(a), emissions are detected whenever a
leak is detected according to the method. Acoustic leak detection is
only applicable for through-valve leakage and is not applicable for
screening a manifolded group of compressor sources.
(F) If one of the screening methods specified in Sec. 98.234(a)(1)
through (3) identifies a leak in a manifolded group of reciprocating
compressor sources, you may use acoustic leak detection, according to
Sec. 98.234(a)(5), to identify the source of the leak. You must use
one of the methods specified in paragraphs (p)(4)(ii)(A) through (D) of
this section to quantify the emissions from the identified source.''
u. On page 42275, in the second column, paragraph (q)(1)(v)(B) is
corrected to read:
``(B) For the components listed in Sec. 98.232(d)(7) that are
subject to the equipment leak standards for onshore natural gas
processing plants in Sec. 60.5400b or Sec. 60.5401b of this chapter,
or an applicable approved state plan or applicable Federal plan in part
62 of this chapter, you must use either of the leak detection methods
in Sec. 98.234(a)(1)(iii) or (a)(2)(ii).''
v. On page 42275, in the third column, paragraph (q)(1)(vii)(D) is
corrected to read:
``(D) For an onshore petroleum and natural gas production facility
electing to conduct leak detection surveys according to paragraph
(q)(1)(iv) of this section, a survey of all required components at a
single well-pad site, as defined in Sec. 98.238, will be considered a
complete leak detection survey for purposes of this section.''
w. On page 42276, in the second column, paragraph (q)(1)(vii)(G) is
corrected to read:
``(G) For natural gas distribution facilities that choose to
conduct equipment leak surveys at all above grade transmission-
distribution transfer stations over multiple years as provided in
paragraph (q)(1)(viii) of this section, a survey of all required
components at the above grade transmission-distribution transfer
stations monitored during the calendar year will be considered a
complete leak detection survey for purposes of this section.''
x. On page 42276, beginning in the first column, parameters ``k''
and ``GHGi'' of equation W-30 in paragraph (q)(2)
introductory text are corrected to read:
``k = Factor to adjust for undetected leaks by respective leak
detection method, where k equals 1.25 for the methods in Sec.
98.234(a)(1), (3) and (5); k equals 1.55 for the method in Sec.
98.234(a)(2)(i); and k equals 1.27 for the method in Sec.
98.234(a)(2)(ii).
GHGi = For onshore petroleum and natural gas production
facilities and onshore petroleum and natural gas gathering and
boosting facilities, concentration of GHGi,
CH4 or CO2, in produced natural gas as defined
in paragraph (u)(2) of this section; for onshore natural gas
processing facilities, concentration of GHGi,
CH4 or CO2, in the total hydrocarbon of the
feed natural gas; for
[[Page 71846]]
onshore natural gas transmission compression and underground natural
gas storage, GHGi equals 0.975 for CH4 and 1.1
x 10-2 for CO2 or concentration of
GHGi, CH4 or CO2, in the total
hydrocarbon of the feed natural gas; for LNG storage and LNG import
and export equipment, GHGi equals 1 for CH4
and 0 for CO2; and for natural gas distribution and
onshore natural gas transmission pipeline, GHGi equals 1
for CH4 and 1.1 x 10-2 for CO2.''
y. On page 42277, in the second column, parameter ``n'' of equation
W-31 in paragraph (q)(2)(x)(A) is corrected to read:
``n = Number of years of data, according to paragraph (q)(1)(viii)
of this section, whose results are used to calculate emission factor
``EFs,MR,i'' according to paragraph (q)(2)(x)(B) of this
section.''
z. On page 42278, in the second column, paragraph (q)(3)(vii) is
corrected to read:
``(vii) Multiply the total CO2 and CH4 mass
emissions by survey method and component type determined in paragraph
(q)(3)(vi) of this section by the survey specific value for ``k'', the
factor adjustment for undetected leaks, where k equals 1.25 for the
methods in Sec. 98.234(a)(1), (3) and (5); k equals 1.55 for the
method in Sec. 98.234(a)(2)(i); and k equals 1.27 for the method in
Sec. 98.234(a)(2)(ii).''
aa. On page 42278, in the third column, paragraph (q)(3)(viii)(B)
is corrected to read:
``(B) If you chose to conduct equipment leak surveys at all above
grade transmission-distribution transfer stations over multiple years,
``n,'' according to paragraph (q)(1)(viii) of this section, you must
use the meter/regulator run population emission factors calculated
according to paragraph (q)(3)(viii)(A) of this section and the total
count of all meter/regulator runs at above grade transmission-
distribution transfer stations to calculate emissions from all above
grade transmission-distribution transfer stations using equation W-32B
to this section.''
bb. On page 42278, in the third column, paragraph (q)(4)(i)
introductory text is corrected to read:
``(i) You must track the leak measurements made separately for each
of the applicable components listed in paragraphs (q)(1)(i) through
(vi) of this section and by the leak detection method according to the
following three bins.''
cc. On page 42279, in the first column, the parameter
``Es,MR,i'' of equation W-32B in paragraph (r) introductory
text is corrected to read:
``Es,MR,i = Annual volumetric emissions of
GHGi from all meter/regulator runs at above grade
metering regulating stations that are not above grade transmission-
distribution transfer stations or, when used to calculate emissions
according to paragraph (q)(2)(xi) or (q)(3)(viii)(B) of this
section, the annual volumetric emissions of GHGi from all
meter/regulator runs at above grade transmission-distribution
transfer stations.''
dd. On page 42279, in the second column, the parameter
``CountMR'' of equation W-32B in paragraph (r) introductory
text is corrected to read:
CountMR = Total number of meter/regulator runs at above
grade metering-regulating stations that are not above grade
transmission-distribution transfer stations or, when used to
calculate emissions according to paragraph (q)(2)(xi) or
(q)(3)(viii)(B) of this section, the total number of meter/regulator
runs at above grade transmission-distribution transfer stations.
ee. On page 42280, in the third column, paragraph (s)(2)(i) is
corrected to read:
``(i) Use the most recent monitoring and calculation methods
published by BOEM as referenced in 30 CFR 550.302 through 304 to
calculate annual emissions for any reporting year that overlaps with a
BOEM emissions inventory year and any other reporting year in which the
facility has the data needed to use BOEM's emissions calculation
methods.''
ff. On page 42284, in the second column, paragraph (z)(2)(i)(B) is
corrected to read:
``(B) The natural gas must have a maximum higher heating value of
1,100 Btu per standard cubic foot.''
2. Effective January 1, 2025, in Sec. 98.236:
a. On page 42295, in the third column, paragraph (b) introductory
text is corrected to read:
``(b) Natural gas pneumatic devices. You must indicate whether the
facility contains the following types of equipment: Continuous high
bleed natural gas pneumatic devices, continuous low bleed natural gas
pneumatic devices, and intermittent bleed natural gas pneumatic
devices. If the facility contains any continuous high bleed natural gas
pneumatic devices, continuous low bleed natural gas pneumatic devices,
or intermittent bleed natural gas pneumatic devices, then you must
report the information specified in paragraphs (b)(1) through (6) of
this section, as applicable. You must report the information specified
in paragraphs (b)(1) through (6) of this section, as applicable, for
each well-pad site (for onshore petroleum and natural gas production),
each gathering and boosting site (for onshore petroleum and natural gas
gathering and boosting), or facility (for all other applicable industry
segments).''
b. On page 42297, in the first column, paragraph (b)(5)(i)(A) is
corrected:
``(A) Indicate whether you measured emissions according to Sec.
98.233(a)(3)(i)(A) or used default emission factors according to Sec.
98.233(a)(3)(i)(B) to calculate emissions from your continuous high
bleed and continuous low bleed natural gas pneumatic devices vented
directly to the atmosphere at this well-pad site, gathering and
boosting site, or facility, as applicable.''
c. On page 42297, in the first column, paragraph (b)(5)(ii)(C) is
corrected to read:
``(C) Average time the intermittent bleed natural gas pneumatic
devices were in service (i.e., supplied with natural gas) and assumed
to be malfunctioning in the calendar year (average value of
``Tmal,z'' in equation W-1C to Sec. 98.233).''
d. On page 42298, in the first column, paragraphs (c)(4)(vi) and
(vii) are corrected to read:
``(vi) Annual CO2 emissions, in metric tons
CO2, cumulative for all natural gas driven pneumatic pumps
for which emissions were directly measured and calculated as specified
in Sec. 98.233(c)(2)(ii) through (vi). Enter 0 if emissions from none
of the natural gas driven pneumatic pumps at this well-pad site or
gathering and boosting site were measured during the reporting year.
``(vii) Annual CH4 emissions, in metric tons
CH4, cumulative for all natural gas driven pneumatic pumps
for which emissions were directly measured and calculated as specified
in Sec. 98.233(c)(2)(ii) through (vi). Enter 0 if emissions from none
of the natural gas driven pneumatic pumps at this well-pad site or
gathering and boosting site were measured during the reporting year.''
e. On page 42298, beginning in the first column, paragraph
(c)(4)(viii) is corrected to read:
``(viii) Annual CO2 emissions, in metric tons
CO2, cumulative for all natural gas driven pneumatic pumps
for which emissions were calculated according to Sec.
98.233(c)(2)(vii)(B) through (D). Enter 0 if emissions from all natural
gas driven pneumatic pumps at this well-pad site or gathering and
boosting site were measured during the reporting year.''
f. On page 42300, in the third column, paragraph (e)(1)(xvi)(C) is
corrected to read:
[[Page 71847]]
``(C) Annual CH4 emissions, in metric tons
CH4, from the flash tank when not routed to a flare or
regenerator firebox/fire tubes, calculated according to Sec.
98.233(e)(1) and, if applicable, (e)(4).''
g. On page 42301, beginning in the third column, paragraph
(e)(3)(vi) is corrected to read:
``(vi) For desiccant dehydrators at the facility, well-pad site, or
gathering and boosting site identified in paragraph (e)(3)(ii) of this
section, whether any dehydrator emissions were routed to a control
device that reduces CO2 and/or CH4 emissions
other than a vapor recovery system or a flare or a non-flare combustion
unit. If any dehydrator emissions were routed to a control device that
reduces CO2 and/or CH4 emissions other than a
vapor recovery system or a flare or a non-flare combustion unit, then
you must specify the type of control device(s) and the total number of
dehydrators at the facility that were routed to each type of control
device.''
h. On page 42302, in the first column, paragraph (e)(3)(vii)(B) is
corrected to read:
``(B) Total volume of gas routed to non-flare combustion units, in
standard cubic feet.''
i. On page 42302, in the first column, paragraph (e)(3)(viii)(A) is
corrected to read:
``(A) Annual CO2 emissions, in metric tons
CO2, for emissions from all desiccant dehydrators reported
under paragraph (e)(3)(ii) of this section that are not venting to a
flare or non-flare combustion unit, calculated according to Sec.
98.233(e)(3) and, if applicable, (e)(4), and summing for all such
dehydrators.''
j. On page 42307, in the first column, paragraph (j)(1)(x)(F) is
corrected to read:
``(F) The number of atmospheric pressure storage tanks in paragraph
(j)(1)(x)(D) or (E) of this section that had an open thief hatch at
some point during the year while the storage tank was also routing
emissions to a vapor recovery system and/or a flare.''
k. On page 42309, in the second column, paragraph (l)(3)(iii) is
corrected to read:
``(iii) Number of well testing days for the tested well in the
calendar year. You may delay reporting of this data element if you
indicate in the annual report that the well is a wildcat well or
delineation well. If you elect to delay reporting of this data element,
you must report by the date specified in paragraph (cc) of this section
the number of well testing days for the tested well.''
l. On page 42309, in the third column, paragraph (l)(4)(iv) is
corrected to read:
``(iv) Average annual production rate for the tested well, in
actual cubic feet per day. You may delay reporting of this data element
if you indicate in the annual report that the well is a wildcat well or
delineation well. If you elect to delay reporting of this data element,
you must report by the date specified in paragraph (cc) of this section
the measured average annual production rate for the tested well.''
m. On page 42310, in the second column, paragraph (m)(7)(iii) is
corrected to read:
``(iii) Indicate whether associated gas streams vented from the
well were measured with a continuous gas composition analyzer.''
n. On page 42311, in the third column, paragraph (n)(14) is
corrected to read:
``(14) Annual average mole fraction of CH4 in the
feed gas to the flare if you measure composition of the inlet gas as
specified in Sec. 98.233(n)(4)(i) or (ii) (``XCH4'' in
equation W-19 to Sec. 98.233), or the annual average CH4
mole fractions for each stream if you determine composition of each
stream routed to the flare as specified in Sec.
98.233(n)(4)(iii).''
o. On page 42315, in the first column, paragraph (q)(2)(iv) is
corrected to read:
``(iv) Emission factor or measurement method used (e.g., default
emission factor; facility-specific emission factor developed
according to Sec. 98.233(q)(4); or direct measurement according to
Sec. 98.233(q)(3)).''
p. On page 42317, beginning in the third column, paragraph (z)(2)
introductory text is corrected to read:
``(2) Indicate whether the combustion units include: External
fuel combustion units with a rated heat capacity greater than 5
million Btu per hour; internal fuel combustion units that are not
compressor-drivers, with a rated heat capacity greater than 1
million Btu per hour (or the equivalent of 130 horsepower); or,
internal fuel combustion units of any heat capacity that are
compressor-drivers. For each type of combustion unit at your
facility, you must report the information specified in paragraphs
(z)(2)(i) through (iv) and (z)(2)(viii) through (x) of this section,
except for internal fuel combustion units that are not compressor-
drivers, with a rated heat capacity greater than 1 million Btu per
hour (or the equivalent of 130 horsepower) or internal fuel
combustion units of any heat capacity that are compressor-drivers
that combust natural gas meeting the criteria in Sec. 98.233(z)(1)
or (2) or a fuel meeting the criteria in Sec. 98.233(z)(3), which
must report the information specified in paragraphs (z)(2)(i)
through (x) of this section. Information must be reported for each
combustion unit type, fuel type, and method for determining the
CH4 emission factor combination, as applicable.''
q. On page 42318, in the third column, paragraph (aa)(3)
introductory text is corrected to read:
``(3) For natural gas processing, if your facility fractionates
NGLs and also reported as a supplier to subpart NN of this part
under the same e-GGRT identification number in the calendar year,
you must report the information specified in paragraphs (aa)(3)(ii)
and (aa)(3)(v) through (ix) of this section. Otherwise, report the
information specified in paragraphs (aa)(3)(i) through (ix) of this
section.''
Correcting Amendments Effective October 4, 2024
For reasons stated in the preamble, 40 CFR part 98 is amended by
making the following correcting amendments:
PART 98--MANDATORY GREENHOUSE GAS REPORTING
0
1. The authority citation for part 98 continues to read as follows:
Authority: 42 U.S.C. 7401-7671q.
0
2. Effective October 4, 2024, amend Sec. 98.233 by:
0
a. Revising paragraph (a)(3)(ii)(A);
0
b. Revising equations W-10A and W-10B of paragraph (g); and
0
c. Revising paragraph (q)(3)(vii).
The revisions read as follows:
Sec. 98.233 Calculating GHG emissions.
* * * * *
(a) * * *
(3) * * *
(ii) * * *
(A) You must use one of the monitoring methods specified in Sec.
98.234(a)(1) through (3), (6), and (7) except that the monitoring dwell
time for each device vent must be at least 2 minutes or until a
malfunction is identified, whichever is shorter. A device is considered
malfunctioning if any leak is observed when the device is not actuating
or if a leak is observed for more than 5 seconds, or the extended
duration as specified in paragraph (a)(3)(ii)(C) of this section if
applicable, during a device actuation. If you cannot tell when a device
is actuating, any observed leak from the device indicates a
malfunctioning device.
* * * * *
(g) * * *
[[Page 71848]]
[GRAPHIC] [TIFF OMITTED] TR04SE24.072
* * * * *
(q) * * *
(3) * * *
(vii) Multiply the total CO2 and CH4 mass
emissions by survey method and component type determined in paragraph
(q)(3)(vi) of this section by the survey specific value for ``k'', the
factor adjustment for undetected leaks, where k equals 1.25 for the
methods in Sec. 98.234(a)(1), (3), (5), and (6); k equals 1.55 for the
method in Sec. 98.234(a)(2); and k equals 1.27 for the method in Sec.
98.234(a)(7).
* * * * *
0
3. Effective October 4, 2024, amend Sec. 98.236 by revising paragraph
(b)(5)(ii)(C) to read as follows
Sec. 98.236 Data reporting requirements.
* * * * *
(b) * * *
(5) * * *
(ii) * * *
(C) Average time the intermittent bleed natural gas pneumatic
devices were in service (i.e., supplied with natural gas) and assumed
to be malfunctioning in the calendar year (average value of
``Tmal,z'' in equation W-1C to Sec. 98.233).
* * * * *
Joseph Goffman,
Assistant Administrator, Office of Air and Radiation.
[FR Doc. 2024-18933 Filed 9-3-24; 8:45 am]
BILLING CODE 6560-50-P